| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 3 |
2.5%
|
| 2 | Every few weeks | 15 |
12.5%
|
| 3 | Every few months | 75 |
62.5%
|
| 4 | Not at all | 27 |
22.5%
|
| Sysmiss | 27 |